Flow switches FS-700 (P/N: FS7013) is used in Tank-less water heater
Tank-less Water Heater heats water instantly to any adjustable temperature, Cold water enters at the bottom and travels through a flow switch which activates the unit when the power switch is on. When incoming water exits the flow switch, it comes in contact with stainless steel heating elements which efficiently transfer energy to heat the water. Electronic control monitors senses the outlet water temperature and determines how many current needed to be turned on heating elements to efficiently maintain the desired temperature.